public /*internal*/ bool debugCheckedForDeletions = false; // for test purposes.
internal Hits(Searcher s, Query q, Filter f)
{
weight = q.Weight(s);
searcher = s;
filter = f;
nDeletions = CountDeletions(s);
GetMoreDocs(50); // retrieve 100 initially
lengthAtStart = length;
}
public /*internal*/ bool debugCheckedForDeletions = false; // for test purposes.
internal Hits(Searcher s, Query q, Filter f)
{
weight = q.Weight(s);
searcher = s;
filter = f;
nDeletions = CountDeletions(s);
GetMoreDocs(50); // retrieve 100 initially
lengthAtStart = length;
}
/// <summary> Create weight in multiple index scenario.
///
/// Distributed query processing is done in the following steps:
/// 1. rewrite query
/// 2. extract necessary terms
/// 3. collect dfs for these terms from the Searchables
/// 4. create query weight using aggregate dfs.
/// 5. distribute that weight to Searchables
/// 6. merge results
///
/// Steps 1-4 are done here, 5+6 in the search() methods
///
/// </summary>
/// <returns> rewritten queries
/// </returns>
public /*protected internal*/ override Weight CreateWeight(Query original)
{
// step 1
Query rewrittenQuery = Rewrite(original);
// step 2
System.Collections.Hashtable terms = new System.Collections.Hashtable();
rewrittenQuery.ExtractTerms(terms);
// step3
Term[] allTermsArray = new Term[terms.Count];
int index = 0;
System.Collections.IEnumerator e = terms.Keys.GetEnumerator();
while (e.MoveNext())
{
allTermsArray[index++] = e.Current as Term;
}
int[] aggregatedDfs = new int[terms.Count];
for (int i = 0; i < searchables.Length; i++)
{
int[] dfs = searchables[i].DocFreqs(allTermsArray);
for (int j = 0; j < aggregatedDfs.Length; j++)
{
aggregatedDfs[j] += dfs[j];
}
}
System.Collections.Hashtable dfMap = new System.Collections.Hashtable();
for (int i = 0; i < allTermsArray.Length; i++)
{
dfMap[allTermsArray[i]] = (System.Int32)aggregatedDfs[i];
}
// step4
int numDocs = MaxDoc();
CachedDfSource cacheSim = new CachedDfSource(dfMap, numDocs, GetSimilarity());
return(rewrittenQuery.Weight(cacheSim));
}
/// <summary> creates a weight for <code>query</code></summary>
/// <returns> new weight
/// </returns>
public /*protected internal*/ virtual Weight CreateWeight(Query query)
{
return(query.Weight(this));
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
Weight weight = query.Weight(new IndexSearcher(reader));
return(new AnonymousClassDocIdSet(weight, reader, this));
}
/// <summary> creates a weight for <code>query</code></summary>
/// <returns> new weight
/// </returns>
public /*protected internal*/ virtual Weight CreateWeight(Query query)
{
return query.Weight(this);
}
